Efficient flue gas dedusting and cooling device for electrode paste calcination

Abstract

An efficient flue gas dedusting and cooling device for electrode paste calcination comprises a closed shell, a partition plate, at least two layers of water film plates, a water inlet pipe, a water outlet pipe and a heat dissipation pool, the partition plate is lower than the closed shell, and the upper end, the front end and the rear end of the partition plate are fixedly connected with the closed shell; the partition plate divides the closed shell into a flue gas buffer area, a cooling dust removal area and a water pool area, the flue gas buffer area and the cooling dust removal area are located on the two sides of the partition plate, the water pool area is located below the partition plate, the water film plates are arranged in the cooling dust removal area, the width of the water film plates is smaller than that of the closed shell, and the upper water film plate and the lower water film plate are arranged in a staggered mode. One end of the water film plate is fixedly connected with the partition plate, the other end of the water film plate is fixedly connected with the closed shell, the water inlet pipe is arranged on the side wall of the cooling dust removal area and located above the water film plate, water falls onto the water film plate to form a water film, a smoke outlet is formed in the top of the closed shell, and a smoke inlet is formed in the lower end of the smoke buffer area.

Description

TECHNICAL FIELD

[0001] The utility model relates to waste gas treatment technical field especially, relates to a kind of efficient flue gas dust removal cooling device for electrode paste calcination. BACKGROUND

[0002] Electrode paste needs to carry out high-temperature treatment to raw materials and kneaded and formed coal during preparation process. In the high-temperature treatment process, a large amount of flue gas will be generated, which has high temperature, large dust content and contains sulfur compounds and other environmental hazards. High-temperature, high-dust flue gas will greatly damage the desulfurization equipment during the desulfurization process, reduce the desulfurization effect, and cause problems such as pipeline blockage. The existing technology generally uses a spray tower to cool and remove dust from the flue gas, but the cooling and dust removal efficiency of the spray tower is low, and the equipment occupies a large space. The dust content in the purified flue gas is still relatively high. SUMMARY

[0003] Therefore, it is necessary to provide an efficient flue gas dust removal cooling device for electrode paste calcination, which has a small occupied space and high cooling and dust removal efficiency.

[0004] An efficient flue gas dust removal cooling device for electrode paste calcination includes an enclosed shell, a partition, at least two water film plates, a water inlet pipe, a water outlet pipe, and a heat sink. The height of the partition is lower than the height of the enclosed shell, and the upper end, front end, and rear end of the partition are fixedly connected to the enclosed shell. The partition divides the enclosed shell into a flue gas buffer zone, a cooling and dust removal zone, and a water pool zone. The flue gas buffer zone and the cooling and dust removal zone are located on both sides of the partition, and the water pool zone is located below the partition. The water film plates are arranged in the cooling and dust removal zone, and the width of the water film plates is less than the width of the enclosed shell. The upper and lower water film plates are staggered, one end of the water film plates is fixedly connected to the partition, and the other end is fixedly connected to the enclosed shell to form an S-shaped flue gas passage in the cooling and dust removal zone. The water inlet pipe is arranged on the side wall of the cooling and dust removal zone above the water film plates. The water falls onto the water film plates to form a water film. The top of the enclosed shell is provided with a flue gas outlet, and the lower end of the flue gas buffer zone is provided with a flue gas inlet. The flue gas passes through the water pool zone and enters the cooling and dust removal zone. The water outlet pipe is arranged at the lower end of the water pool zone, and the water outlet pipe and the water inlet pipe are connected to the heat sink to form a circulating water system.

[0005] In the above efficient flue gas dust removal cooling device, the water film plates are inclined downward by 5-10 degrees to make the water film more uniform.

[0006] In the above efficient flue gas dust removal cooling device, the lower end of the water film plates is provided with a plurality of reinforcing rib plates.

[0007] In the above efficient flue gas dust removal cooling device, the water film plates are detachably connected to the enclosed shell for easy replacement.

[0008] The water film plate is made of stainless steel.

[0009] In the high-efficiency flue gas dust removal and cooling device, the bottom of the pool area is inclined downward, and a dredging opening is arranged at the end of the pool area to timely remove the accumulated soil at the bottom.

[0010] In the high-efficiency flue gas dust removal and cooling device, the flue gas buffer area is further provided with a maintenance opening to facilitate maintenance personnel to enter the closed shell for maintenance.

[0011] In the high-efficiency flue gas dust removal and cooling device, the water inlet pipe is provided with a plurality of spray heads to enhance dust removal and cooling.

[0012] Beneficial effects: After the flue gas enters the closed shell, the dust is first naturally settled in the flue gas buffer area, and the dust in the flue gas acts as a crystal nucleus and combines with the water mist in the flue gas buffer area to form liquid droplets, which is more conducive to the settlement of dust. At the same time, due to the buffering effect, the flow rate of the flue gas is significantly reduced, and the flue gas can be filtered under the action of the water film after passing through the pool area and entering the cooling and dust removal area. The dust in the flue gas will be filtered. Compared with spray dust removal, the contact surface of the water film with the flue gas is larger, and the dust removal is more complete. Similarly, the cooling is also more significant. The S-shaped channel of the cooling and dust removal area significantly increases the travel of the flue gas, which is more conducive to the cooling and dust removal of the flue gas.

[0013] At the same time, compared with the spray tower, the high-efficiency flue gas dust removal and cooling device of the utility model occupies less space. The spray tower needs to have a large diameter and height to make the mist droplets fully contact with the flue gas, and the flue gas travels straight up and down, so the space occupied is relatively large. Through the measures of static dust removal, water film dust removal, and S-shaped channel, the dust removal effect of the utility model is better, so the space occupied is relatively reduced. BRIEF DESCRIPTION OF DRAWINGS

[0014] Fig. 1 It is a structure schematic view of the high-efficiency flue gas dust removal and cooling device for electrode paste calcination.

[0015] Fig. 2 It is a perspective view of a better angle of the high-efficiency flue gas dust removal and cooling device for electrode paste calcination.

[0016] Fig. 3 It is another perspective view of a better angle of the high-efficiency flue gas dust removal and cooling device for electrode paste calcination.

[0017] Fig. 4 It is a sectional view of the high-efficiency flue gas dust removal and cooling device for electrode paste calcination.

[0018] In the figure: the high-efficiency flue dust removal and cooling device 10 for electrode paste calcination, the closed shell 20, the flue buffer zone 201, the cooling and dust removal zone 202, the water pool zone 203, the flue outlet 204, the flue inlet 205, the dredging port 206, the maintenance and inspection port 207, the partition plate 30, the water film plate 40, the reinforcing rib plate 401, the water inlet pipe 50, and the water outlet pipe 60. DETAILED DESCRIPTION

[0019] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the drawings required in the embodiments will be briefly introduced as follows. Obviously, the drawings described in the following are some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without any creative effort on the basis of these drawings.

[0020] Please refer to Figs. 1 to 4 The high-efficiency flue dust removal and cooling device 10 for electrode paste calcination comprises a closed shell 20, a partition plate 30, at least two layers of water film plates 40, a water inlet pipe 50, a water outlet pipe 60, and a heat dissipation pool. The height of the partition plate 30 is lower than the height of the closed shell 20, and the upper end, the front end, and the rear end of the partition plate 30 are fixedly connected with the closed shell 20. The partition plate 30 divides the closed shell 20 into a flue buffer zone 201, a cooling and dust removal zone 202, and a water pool zone 203. The flue buffer zone 201 and the cooling and dust removal zone 202 are located on the two sides of the partition plate 30, and the water pool zone 203 is located below the partition plate 30. The water film plates 40 are arranged in the cooling and dust removal zone 202. The width of the water film plates 40 is smaller than the width of the closed shell 20. The upper and lower water film plates 40 are arranged staggered. One end of the water film plates 40 is fixedly connected with the partition plate 30, and the other end of the water film plates 40 is fixedly connected with the closed shell 20, so that the cooling and dust removal zone 202 forms an S-shaped flue passage. The water inlet pipe 50 is arranged on the side wall of the cooling and dust removal zone 202 and located above the water film plates 40. The water falls on the water film plates 40 to form a water film. The top of the closed shell 20 is provided with a flue outlet 204. The lower end of the flue buffer zone 201 is provided with a flue inlet 205. The flue passes through the water pool zone 203 from the flue buffer zone 201 to the cooling and dust removal zone 202. The water outlet pipe 60 is arranged at the lower end of the water pool zone 203. The water outlet pipe 60 and the water inlet pipe 50 are communicated with the heat dissipation pool to form a circulating water system.

[0021] The water pool zone 203, the water inlet pipe 50, the water outlet pipe 60, and the heat dissipation pool constitute a circulating water system. It should be understood that a water pump is arranged in the heat dissipation pool to pump the water in the heat dissipation pool into the water inlet pipe 50.

[0022] In a preferred embodiment, the closed shell 20 of the present application is made of stainless steel material which has good heat dissipation, high temperature resistance, and corrosion resistance.

[0023] The water film plate 40 functions to form a water film under the blocking effect of the falling cooling water. If a water curtain or water film is formed directly through the water inlet pipe 50, a large amount of water is required. By arranging the water film plate 40, the water film plate 40 can first change the flow direction of the cooling water, so that the cooling water changes from vertical flow to horizontal flow, thereby reducing the flow speed of the water and increasing the contact time of the cooling water with the flue gas. At the same time, when the cooling water impacts on the water film plate 40, an impact surface is formed, and the water flow is more dispersed, so that the water film is more easily formed. However, if the water film plate 40 is arranged horizontally, the water flow direction is not guided and is relatively dispersed, which can cause local water to be more and local water to be less, so that the water film is not uniform in time and space.

[0024] Therefore, in a preferred embodiment, the water film plate 40 is inclined downward by 5-10 degrees to make the water film more uniform. When the water film plate 40 is inclined by 5-10 degrees, although the flow speed of the water increases, the water flow direction is guided to some extent, the water film is more uniform, and the use of cooling water is correspondingly reduced.

[0025] The water film plate 40 is subjected to the impact of cooling water for a long time, and the high temperature of the flue gas and the presence of sulfur compounds can corrode the water film plate 40, causing the water film plate 40 to deform or even have a larger inclination or fall off.

[0026] Therefore, in a preferred embodiment, the lower end of the water film plate 40 is provided with a plurality of reinforcing rib plates 401. By increasing the reinforcing rib plates 401, the service life of the water film plate 40 can be prolonged, and the maintenance frequency of the maintenance personnel can be reduced.

[0027] In a preferred embodiment, the water film plate 40 is detachably connected to the closed shell 20 to facilitate replacement.

[0028] In a preferred embodiment, the water film plate 40 and the closed shell 20 are connected by bolts. The water film plate 40 is L-shaped to facilitate bolt fixation. In order to better flow the water film, the surface of the water film plate 40 needs to be relatively smooth, and at the same time, it needs to be corrosion-resistant, high-temperature-resistant, and have a certain supporting strength.

[0029] In a preferred embodiment, the water film plate 40 is made of stainless steel.

[0030] With the long-time operation of the device, dust will gradually accumulate at the bottom of the pool area 203 to form sludge. The sludge gradually raises the water level, reducing the volume of the pool area 203, so the sludge needs to be cleaned regularly.

[0031] In a preferable embodiment, the bottom of the pool area 203 is inclined downward, and the pool area 203 is provided with a dredging opening 206 at the end thereof for timely removing the silt accumulated on the bottom, and the water outlet pipe 60 is located on the same side as the dredging opening 206. In this way, the silt gradually accumulates toward the dredging opening 206 under the action of gravity and water flow. When dredging, only the area below the flue gas buffer area 201 needs to be cleaned, thereby reducing the labor intensity of workers. When dredging, the silt can be simply poured out. In the later stage of dredging, a small amount of silt can be poured out from the dredging opening 206 together with the sludge water in cooperation with stirring.

[0032] In consideration of dredging and maintenance of the inside of the sealed shell, in a preferable embodiment, the flue gas buffer area 201 is further provided with a maintenance opening 207 for facilitating maintenance personnel to enter the closed shell 20 for maintenance. In normal times, the maintenance opening 207 is closed, and is opened when maintenance is needed. The maintenance opening 207 is closed by using a cover plate which is fixed to the maintenance opening 207 by bolts.

[0033] In the cooling and dust removal area 202, the water film is mainly used to cool and remove dust from the flue gas. In order to increase the contact area between the flue gas and the cooling water, in a preferable embodiment, the water inlet pipe 50 is provided with a plurality of spray heads to enhance dust removal and cooling. In this way, during the spraying process, the flue gas also contacts with water, thereby enhancing the effect of dust removal and cooling.

[0034] The above only discloses preferable embodiments of the present application, and of course cannot limit the scope of the present application. Those skilled in the art can understand that all or part of the above-mentioned embodiments can be implemented, and equivalent changes made in accordance with the present application, still belong to the scope of the present application.

Claims

1. A high-efficiency flue gas dust removal and cooling device for electrode paste calcination, characterized in that: The utility model provides a kind of smoke dust removal device, including closed shell, partition, at least two water film plates, water inlet pipe, water outlet pipe, heat sink, the height of the partition is lower than the height of closed shell, the upper end, the front end, the rear end of partition are fixedly connected with closed shell, the closed shell is divided into smoke buffer zone, cooling and dust removal zone, water pool area by the partition, wherein smoke buffer zone and cooling and dust removal zone are located on the two sides of partition, water pool area is located below partition, the water film plate is arranged in cooling and dust removal zone, the width of water film plate is less than the width of closed shell, upper and lower water film plates are staggered arrangement, one end of water film plate is fixedly connected with partition, the other end of water film plate is fixedly connected with closed shell, so that cooling and dust removal zone forms S-shaped smoke passage, water inlet pipe is arranged on the side wall of cooling and dust removal zone and is located above water film plate, water falls on water film plate and forms water film, the top of closed shell is equipped with smoke outlet, the lower end of smoke buffer zone is equipped with smoke inlet, smoke passes through water pool area from smoke buffer zone and enters cooling and dust removal zone, water outlet pipe is arranged in the lower end of water pool area, water outlet pipe, water inlet pipe and heat sink are communicated to form circulating water.

2. The efficient flue gas dedusting and cooling device for electrode paste calcination according to claim 1, characterized in that: The water film plate is inclined downward by 5-10 degrees, so that the water film is more uniform.

3. The efficient flue gas dedusting and cooling device for electrode paste calcination according to claim 2, characterized in that: The lower end of the water film plate is provided with a plurality of reinforcing rib plates.

4. The efficient flue gas dedusting and cooling device for electrode paste calcination according to claim 1, characterized in that: The water film plate is detachably connected with the closed shell, so as to facilitate replacement.

5. The high-efficiency flue gas dedusting and cooling device for electrode paste calcination according to any one of claims 1-4, characterized in that: The water film plate is made of stainless steel.

6. The efficient flue gas dedusting and cooling device for electrode paste calcination according to claim 1, characterized in that: The bottom of the water pool area is inclined downward, and the end of the water pool area is provided with a dredging port to timely remove the accumulated soil at the bottom.

7. The efficient flue gas dedusting and cooling device for electrode paste calcination according to claim 1, characterized in that: The smoke buffer zone is also provided with a maintenance port to facilitate maintenance personnel to enter the closed shell for maintenance.

8. The efficient flue gas dedusting and cooling device for electrode paste calcination according to claim 1, characterized in that: The water inlet pipe is provided with a plurality of spray heads to enhance dust removal and cooling.

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